Which statement describes the properties of lanthanoids and actinoids?(1 point)
They are malleable and lustrous, and they tend to conduct both electricity and thermal energy.
They are malleable and lustrous, and they tend to be poor conductors of both electricity and thermal energy.
They are brittle and dull, and they tend to be poor conductors of both electricity and thermal energy.
They are brittle and dull, and they tend to conduct both electricity and thermal energy.